Bargain books, 2 memoirs, a detective novel and a book related to Downton Abbey

I bought three of these books at our local Goodwill book store. It is a small store that just sells books, dvds, and music.

My husband and I have read the whole detective mystery series about John Rebus by Ian Rankin except for this most recent one, "Saints of the Shadow Bible." "A Charmed Life: Growing Up in Macbeth's Castle" by Liza Campbell, is a memoir. Her father was heir to Cawdor Castle where she was born and a review says "wild sorry tale with an offhand wit."
My third Goodwill purchase is "Blue Nights" by Joan Didion, another memoir. I have read other memoirs by her, and she writes about the death of her beloved daughter in this one.
These hardcovers cost $3.49 each and the money goes to a good cause.
My fourth wonderful book is "Lady Almina and the Real Downton Abbey", which is nonfiction about the 5th Countess of Carnarvon written by the 8th and current Countess. The Carnarvon family estate is Highclere Castle, where Downton Abbey is filmed. The real life Lady Almina and the fictional Lady Cora Crawley have much in common, including opening their estate to wounded soldiers in World War I, and I love this book. If you like Downton Abbey or history I recommend this book.